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Quetiapine dosing

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https://www.readbyqxmd.com/read/29453005/post-mortem-quetiapine-concentrations-in-hair-segments-of-psychiatric-patients-correlation-between-hair-concentration-dose-and-concentration-in-blood
#1
Kamilla Nyborg Günther, Sys Stybe Johansen, Marie Katrine Klose Nielsen, Petra Wicktor, Jytte Banner, Kristian Linnet
Drug analysis in hair is useful when seeking to establish drug intake over a period of months to years. Segmental hair analysis can also document whether psychiatric patients are receiving a stable intake of antipsychotics. This study describes segmental analysis of the antipsychotic drug quetiapine in post-mortem hair samples from long-term quetiapine users by ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) analysis. The aim was to obtain more knowledge on quetiapine concentrations in hair and to relate the concentration in hair to the administered dose and the post-mortem concentration in femoral blood...
February 3, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29432503/therapeutic-drug-monitoring-of-atypical-antipsychotics
#2
REVIEW
Anna Emilia Urban, Wiesław Jerzy Cubała
The paper presents an overview and analysis of the results of research on therapeutic ranges of concentrations and receptor occupancy, mainly D2 receptors, in the treatment with some atypical antipsychotic drugs. Amisulpride, aripiprazole, clozapine, quetiapine, olanzapine, risperidone, paliperidone, sertindole, and ziprasidone were taken into account. The benefits of therapeutic drug monitoring to optimize the effectiveness of treatment and avoid side effects or toxicity were shown. The safety of patients, with the possibility to use the lowest effective dose, is an undoubted profit of TDM...
December 30, 2017: Psychiatria Polska
https://www.readbyqxmd.com/read/29410934/insight-and-treatment-outcomes-in-schizophrenia-post-hoc-analysis-of-a-long-term-double-blind-study-comparing-lurasidone-and-quetiapine-xr
#3
Philip D Harvey, Cynthia O Siu, Antony D Loebel
Objective: The objective of this post-hoc analysis was to evaluate the effect of lurasidone and quetiapine extended-release (XR) on insight and judgment and assess the longitudinal relationships between improvement in insight and cognitive performance, functional capacity, quality of well-being, and depressive symptoms in patients with schizophrenia. Design: Clinically unstable patients with schizophrenia (N=488) were randomized to once-daily, fixed-dose treatment with lurasidone 80mg, lurasidone 160mg, quetiapine XR 600mg, or placebo, followed by a long-term, double-blind, flexible-dose continuation study involving these agents...
December 1, 2017: Innovations in Clinical Neuroscience
https://www.readbyqxmd.com/read/29409162/antipsychotic-reduction-and-or-cessation-and-antipsychotics-as-specific-treatments-for-tardive-dyskinesia
#4
REVIEW
Hanna Bergman, John Rathbone, Vivek Agarwal, Karla Soares-Weiser
BACKGROUND: Since the 1950s antipsychotic medication has been extensively used to treat people with chronic mental illnesses such as schizophrenia. These drugs, however, have also been associated with a wide range of adverse effects, including movement disorders such as tardive dyskinesia (TD) - a problem often seen as repetitive involuntary movements around the mouth and face. Various strategies have been examined to reduce a person's cumulative exposure to antipsychotics. These strategies include dose reduction, intermittent dosing strategies such as drug holidays, and antipsychotic cessation...
February 6, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29401113/clozapine-for-treatment-refractory-behavioral-disturbance-in-dementia
#5
Andreea Teodorescu, Lorena Dima, Petru Ifteni, Liliana M Rogozea
BACKGROUND: Behavioral and psychological symptoms in dementia significantly contribute to caregiver burden and impose patient hospitalization. The goal of treatment of admitted patients is the rapid remission of symptoms to allow their return to home as soon as possible. Intervention requires an intrusive approach with parenteral treatment and physical restraints, with a negative emotional impact on patients and their families. Despite the large utilization of antipsychotics for behavioral and psychological symptoms, there is no antipsychotic approved by the Food and Drug Administration for agitation in dementia...
January 31, 2018: American Journal of Therapeutics
https://www.readbyqxmd.com/read/29392351/determination-of-plasma-concentration-reference-ranges-for-oral-aripiprazole-olanzapine-and-quetiapine
#6
Julia Korell, Bruce Green, Allan Rae, Bart Remmerie, An Vermeulen
BACKGROUND: Schizophrenia is a common disease which is commonly managed using antipsychotic medications (APS). Inadequate response and lack of adherence often prevent optimal therapeutic effectiveness. Monitoring APS concentrations can be useful to help improve outcomes for the patient. AIMS: The aim of this study was to develop "reference ranges" for oral aripiprazole, olanzapine, and quetiapine to allow clinicians to understand expected variability in patients treated with APS...
February 1, 2018: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29369597/how-long-does-the-pharmacokinetic-interaction-between-carbamazepine-and-quetiapine-last-after-carbamazepine-withdrawal
#7
(no author information available yet)
OBJECTIVES: Carbamazepine and quetiapine are drugs that are used as mood stabilizers in the treatment of bipolar disorders. A series of studies has shown that concurrent use of carbamazepine decreases quetiapine serum level due to induction of CYP3A enzymes by carbamazepine. METHODS: In a 30-year-old bipolar patient with mania treated with quetiapine 1200 mg and carbamazepine 900 mg per day, we measured quetiapine serum level before and after carbamazepine withdrawal...
December 25, 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/29357776/comparison-of-lurasidone-versus-quetiapine-for-the-treatment-of-delirium-in-critically-ill-patients
#8
Marlena A Fox, Jessica L Elefritz, Brandon M Huang, Charles Hunley
OBJECTIVE: To evaluate the efficacy and safety of lurasidone compared with quetiapine for treatment of delirium in critically ill patients. DESIGN: Prospective, observational cohort study. SETTING: Single-center community teaching hospital. PATIENTS: Forty adult intensive care unit (ICU) patients with delirium (Confusion Assessment Method in the ICU positive), tolerating enteral nutrition, and without active alcohol withdrawal or prior use of atypical antipsychotics...
January 1, 2018: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/29343128/efficacy-and-safety-of-flexibly-dosed-brexpiprazole-for-the-adjunctive-treatment-of-major-depressive-disorder-a-randomized-active-referenced-placebo-controlled-study
#9
Mary Hobart, Aleksandar Skuban, Peter Zhang, Mette Krog Josiassen, Nanco Hefting, Carole Augustine, Claudette Brewer, Raymond Sanchez, Robert D McQuade
OBJECTIVE: To assess the efficacy, safety and tolerability of brexpiprazole as adjunctive treatment in adults with major depressive disorder (MDD) and an inadequate response to prior antidepressant treatment (ADT). METHODS: Patients with a current major depressive episode after prior treatment with 1-3 ADTs entered an 8- or 10-week prospective treatment phase in which they received double-blind placebo adjunct to open-label ADT. Inadequate responders were randomized (2:2:1) to brexpiprazole 2-3 mg/day, placebo, or quetiapine extended-release (XR) 150-300 mg/day, adjunct to the same ADT, for 6 weeks...
January 17, 2018: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/29343085/a-lack-of-systemic-absorption-following-the-repeated-application-of-topical-quetiapine-in-healthy-adults
#10
Bryce Kayhart, Maria I Lapid, Sarah Nelson, Julie L Cunningham, Virginia H Thompson, Jonathan G Leung
In the absence of suitable oral or intravenous access for medication administration and when the intramuscular medications are undesirable, alternative routes for drug delivery may be considered. Antipsychotics administered via an inhaled, intranasal, rectal, or topical route have been described in the literature. Topically administered antipsychotics have been previously reported to produce negligible systemic absorption despite being used in clinical practice for nausea and behavioral symptoms associated with dementia...
January 1, 2018: American Journal of Hospice & Palliative Care
https://www.readbyqxmd.com/read/29331603/metabolic-risk-factors-in-schizophrenia-and-bipolar-disorder-the-effect-of-comedication-with-selective-serotonin-reuptake-inhibitors-and-antipsychotics
#11
K K Fjukstad, A Engum, S Lydersen, I Dieset, N Eiel Steen, O A Andreassen, O Spigset
BACKGROUND: The aim of this observational study was to investigate the relationship between metabolic factors and use of selective serotonin reuptake inhibitors (SSRIs) combined with olanzapine, quetiapine or risperidone. METHODS: Data from the Norwegian Thematically Organized Psychosis study, a cross-sectional study on 1301 patients with schizophrenia (n=868) or bipolar disorder (n=433), were analyzed. As exposure variables in the linear regression model were included the dose or serum concentration of SSRIs (n=280) and of olanzapine (n=398), quetiapine (n=234) or risperidone (n=128)...
April 17, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/29284810/efficacy-and-tolerability-of-clozapine-versus-quetiapine-in-treatment-resistant-schizophrenia
#12
Mitesh Kumar, B S Chavan, Ajeet Sidana, Subhash Das
Objectives: To compare the efficacy and tolerability of clozapine and quetiapine in patients with treatment-resistant schizophrenia (TRS). Patients and Methods: In this prospective, randomized, open label study of 14 weeks, 53 patients with schizophrenia diagnosed as per ICD-10 and fulfilling the modified version of Conley and Kelly's criteria of TRS were randomly assigned to receive clozapine or quetiapine as per a computer-generated random table. After 2-weeks of dose-titration phase, doses were fixed at minimum therapeutic dose and subsequently adjusted according to the clinical improvement...
November 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/29280533/comparative-effects-of-aripiprazole-and-selected-antipsychotic-drugs-on-lipid-peroxidation-in-plasma
#13
Anna Dietrich-Muszalska, Jolanta Kolińska-Łukaszuk
AIM: The aim of the present study was to evaluate and compare the effects of a new antipsychotic aripiprazole, unique due to its mechanism of action, with the effects of selected antipsychotic drugs such as quetiapine, olanzapine, clozapine, risperidone and ziprasidone (at the final concentrations corresponding to clinically effective doses used for the treatment of acute episodes of schizophrenia) on lipid peroxidation in human plasma measured by the level of TBARS (thiobarbituric acid reactive substances), which is a marker of oxidative stress...
December 27, 2017: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/29274869/neuromodulators-for-functional-gi-disorders-disorders-of-gut-brain-interaction-a-rome-foundation-working-team-report
#14
REVIEW
Douglas A Drossman, Jan Tack, Alexander C Ford, Eva Szigethy, Hans Törnblom, Lukas Van Oudenhove
BACKGROUND AND AIMS: Central neuromodulators (antidepressants, antipsychotics and other CNS targeted medications) are increasingly used for treatment of functional GI disorders (FGIDs), now recognized as disorders of gut-brain interaction. However, the available evidence and guidance for the use of central neuromodulators in these conditions is scanty and incomplete. In this Rome Foundation Working Team report, a multidisciplinary team summarized available research evidence and clinical experience to provide guidance and treatment recommendations...
December 21, 2017: Gastroenterology
https://www.readbyqxmd.com/read/29225337/divergent-effects-of-acute-and-repeated-quetiapine-treatment-on-dopamine-neuron-activity-in-normal-vs-chronic-mild-stress-induced-hypodopaminergic-states
#15
REVIEW
Jared L Moreines, Zoe L Owrutsky, Kimberly G Gagnon, Anthony A Grace
Clinical evidence supports the use of second-generation dopamine D2 receptor antagonists (D2RAs) as adjunctive therapy or in some cases monotherapy in patients with depression. However, the mechanism for the clinical antidepressant effect of D2RAs remains unclear. Specifically, given accumulating evidence for decreased ventral tegmental area (VTA) dopamine system function in depression, an antidepressant effect of a medication that is expected to further reduce dopamine system activity seems paradoxical. In the present paper we used electrophysiological single unit recordings of identified VTA dopamine neurons to characterize the impact of acute and repeated administration of the D2RA quetiapine at antidepressant doses in non-stressed rats and those exposed to the chronic mild stress (CMS) rodent depression model, the latter modeling the hypodopaminergic state observed in patients with depression...
December 11, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/29223744/effect-of-various-antipsychotic-regimens-on-incidence-of-delirium-in-critically-ill-adults
#16
W Anthony Hawkins, Stephanie V Phan, Stacey L Campbell
PURPOSE: Delirium is common during critical illness but it is unknown whether the choice of antipsychotic or dosing strategy impacts delirium outcomes. We evaluated the incidence of delirium in critically ill adults receiving different antipsychotic regimens. MATERIALS AND METHODS: Single center retrospective cohort study of adult patients admitted to the intensive care unit (ICU). Patients who received haloperidol or quetiapine and scored negative on the Confusion Assessment Method for the ICU (CAM-ICU) prior to initiation were included...
November 28, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/29198307/a-bioequivalence-study-of-quetiapine-25-mg-film-coated-tablets-in-healthy-indonesian-subjects%C3%A2
#17
Yahdiana Harahap, Budi Prasaja, Windy Lusthom, Lia Yumi Yusvita, Theresia Sinandang, Hardiyanti
AIM: This study was conducted in order to compare the bioavailability of two film-coated tablets containing 25 mg of quetiapine. METHODS: 24 subjects were enrolled in and completed a single-center, randomized, single-dose, open-label, two-way crossover study with a 1-week washout period. Plasma samples were collected up to 24 hours following drug administration; thus, quetiapine was determined by liquid chromatography-tandem mass spectrometry (LC-MS/MS) method with turbo-ion-spray mode...
November 30, 2017: International Journal of Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29194089/quetiapine-dose-adjustments-in-pregnant-and-postpartum-women-with-bipolar-disorder
#18
Emily A Pinheiro, Katherine L Wisner, Crystal T Clark
No abstract text is available yet for this article.
December 1, 2017: Journal of Clinical Psychopharmacology
https://www.readbyqxmd.com/read/29185022/change-and-dispersion-of-qt-interval-during-treatment-with-quetiapine-extended-release-versus-aripiprazole-in-children-and-adolescents-with-first-episode-psychosis-results-from-the-tea-trial
#19
Karsten Gjessing Jensen, Stefan Gärtner, Christoph U Correll, Ditte Rudå, Dea Gowers Klauber, Marie Stentebjerg-Olesen, Birgitte Fagerlund, Jens Richardt Jepsen, Anders Fink-Jensen, Klaus Juul, Anne Katrine Pagsberg
OBJECTIVE: The aim of this study was to compare the effect of quetiapine extended release (ER) versus aripiprazole on corrected QT interval (QTc) and QT dispersion (QTd) in youths with first-episode psychosis. METHODS: Youths 12-17 years were randomized to quetiapine ER (daily dose range = 50 to 800 mg) or aripiprazole (daily dose range = 2.5 to 30 mg) in a 12-week double-blinded trial and examined at weeks 0, 4, and 12. Primary outcome was QTc change using Hodges formula (QTcH); secondary outcomes included QTcH > 450 ms, QTcH > 500 ms, QTcH change > 60 ms, QTd, and heart rate (HR)...
November 29, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/29134498/vasoplegic-shock-treated-with-methylene-blue-complicated-by-severe-serotonin-syndrome
#20
Betty S Chan, Therese Becker, Angela L Chiew, Ahmed M Abdalla, Tom A Robertson, Xin Liu, Michael S Roberts, Nicholas A Buckley
INTRODUCTION: Management of severe vasoplegic shock in overdose can be very challenging. We describe a case of severe refractory vasodilatory shock in poisoning where methylene blue (MB) was used with success. However, the patient subsequently developed severe Serotonin Syndrome (SS) as a result of an interaction between serotonergic drugs and MB. CASE REPORT: A 15-year-old male developed severe vasoplegic shock 1.5 hours after overdosing on several different medications including quetiapine slow release, quetiapine immediate release, desvenlafaxine slow release, venlafaxine, amlodipine, ramipril, fluoxetine, promethazine and lithium...
November 13, 2017: Journal of Medical Toxicology: Official Journal of the American College of Medical Toxicology
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